2-{2-Chloro-4-fluoro-5-[3-methyl-2,6-dioxo-4-(trifluoromethyl)-1,2,3,6-tetrahydropyrimidin-1-yl]phenoxy}-6-benzyloxypyridine → 6-{2-Chloro-4-fluoro-5-[3-methyl-2,6-dioxo-4-(trifluoromethyl)-1,2,3,6-tetrahydropyrimidin-1-yl]phenoxy}-2-pyridone

HRID 1862328Notes

Reaction equation

HRID 1862328 reaction equation
[Cl:1][C:2]1[CH:22]=[C:21]([F:23])[C:20]([N:24]2[C:29](=[O:30])[CH:28]=[C:27]([C:31]([F:34])([F:33])[F:32])[N:26]([CH3:35])[C:25]2=[O:36])=[CH:19][C:3]=1[O:4][C:5]1[CH:10]=[CH:9][CH:8]=[C:7]([O:11]CC2C=CC=CC=2)[N:6]=1>[Pd].C(OCC)(=O)C>[Cl:1][C:2]1[CH:22]=[C:21]([F:23])[C:20]([N:24]2[C:29](=[O:30])[CH:28]=[C:27]([C:31]([F:34])([F:33])[F:32])[N:26]([CH3:35])[C:25]2=[O:36])=[CH:19][C:3]=1[O:4][C:5]1[NH:6][C:7](=[O:11])[CH:8]=[CH:9][CH:10]=1

Participants

4

Reactant 1

HCID 186192252-{2-Chloro-4-fluoro-5-[3-methyl-2,6-dioxo-4-(trifluoromethyl)-1,2,3,6-tetrahydropyrimidin-1-yl]phenoxy}-6-benzyloxypyridine

Product 1

HCID 186191476-{2-Chloro-4-fluoro-5-[3-methyl-2,6-dioxo-4-(trifluoromethyl)-1,2,3,6-tetrahydropyrimidin-1-yl]phenoxy}-2-pyridoneYield 80.6%

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalystHCID 8857Ethyl AcetateSolvent

Procedure

A mixture of 0.90 g of 2-{2-chloro-4-fluoro-5-[3-methyl-2,6-dioxo-4-(trifluoromethyl)-1,2,3,6-tetrahydropyrimidin-1-yl]phenoxy}-6-benzyloxypyridine, 0.1 g of 10% palladium/carbon and 5 ml of ethyl acetate was stirred for 3 hours at room temperature under hydrogen atmosphere. The reaction system was purged with nitrogen, then, the reaction solution was filtrated through Celite, and the filtrate was concentrated. The residue was subjected to silica gel column chromatography to obtain 0.60 g of 6-{2-chloro-4-fluoro-5-[3-methyl-2,6-dioxo-4-(trifluoromethyl)-1,2,3,6-tetrahydropyrimidin-1-yl]phenoxy}-2-pyridone. 1H-NMR(CDCl3/250 MHz) δ(ppm): 3.54 (s, 3H), 6.11 (d, 1H, J=7.9 Hz), 6.33 (s, 1H), 6.44 (d, 1H, J=7.8 Hz), 7.09 (d, 1H, J=6.7 Hz), 7.37 (d, 1H, J=8.9 Hz), 7.55 (dd, 1H, J=7.9,7.8 Hz)

Workup

  1. customThe reaction system was purged with nitrogen
  2. filtrationthe reaction solution was filtrated through Celite
  3. concentrationthe filtrate was concentrated

Sources & evidence

ORD record
ord-3eef5e7bd82f40c8881a37efbe151ee4
Source dataset
uspto-grants-2003_03
Patent number
US06537948B1

Reaction notes

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